Ship construction.



R. CHILCOTT. SHIP CONSTRUCTION. APPLICATION FILED DEC. 26, ms.

Patented June 12 191?.

UNITEU @IMIEd PATENT @FFIWE.

RICHARD CHILCOTT, 0F PORTLAND, OREGON.

SHIP CONSTRUCTION.

Application filed December 26, 1916.

To all whom it may concern:

Be it known that I, RICHARD CHILCo'rT, a citizen of the United States, residing in the city of Portland, county of Multnomah, and State of Oregon, have invented certain new and useful Improvements in Ship Construction, of which the following is a specification.

My invention relates to ship construction, and more particularly to certain improvements' in the construction of wooden ships, by means of which I am able to eliminate the long heavy timbers now used in the construction of the keelson of a vessel, and thus, not only save these heavy timbers, but to save the floor space in the hold of the vessel, and thereby also avoid the serious objection of having the keelson above the floor for the length of the vessel. I accomplish this by using an iron girder between the ceiling, or floor timbers, directly above the keel of the vessel, the top, or cover, plate of said girder being substantially flush with the floor, while the bottom plate of said girder is flush with the bottom sides of the floor, or ceiling timbers, said girder resting upon the frame-work between the floor, or ceiling timbers, and the outer planking of the vessel. By this construction I am also able to most effectively bolt said steel girder to the keel of the vessel, through the floor frame.

In order that others may more clearly understand my invention, I have illustrated one practical construction thereof in the accompanying sheet of drawings, which I will now describe.

Figure l is a fragmentary vertical cross sectional view through the bottom portion of the vessel, showing the embodiment of my invention therein;

Fig. 2 shows a modified, or alternate, construction of the Web portion of a steel girder; and

Fig. 3 is a vertical cross sectional view through the entire hull of a vessel embodying my invention.

Referring now in detail to the drawings, 1 and 2 are floor timbers resting upon the frame-work 3, to the underside of which frame-work is secured the bottom, and outside planking 4c. The keel 5, is secured in place in the usual manner.

My improvement provides, between the floor timbers 1-1, as clearly shown in Fig. 1, a steel girder 6, extending the full length Specification of Letters Patent.

Patented June 12, 1917.

Serial No. 138,878.

of the vessel between the floor timbers 1-1.

In the embodiment, here illustrated, I have shown a girder of box-form, having the spaced sides, or webs, 7 7 with holes 8-8 therethrough, in register with each other, it being understood that holes are made through the sides or webs of the girder for its entire length, through which bolts, as 9, can be inserted for bolting the timbers 1-1, together, through said girder. It will be noted that the top, or cover, plate 6, of the girder, is flush with the top surface of the fioor timbers 1-1, and also that the bottom plate 6 is flush with the bottom surfaces of said floor timbers 1-1. Holding bolts, as 10, are inserted through the top and bottom plates 6 and 6 of said girder, and extended down through the frame-work 8, and through the keel 5, as clearly indicated in dotted lines.

Thus it will be seen that with this construction, a steel girder is inserted between the floor timbers 1-1, directly above the floor frame and the keel, and securely bolted to the keel throughout the length thereof, and constitutes a most effective keelson for a vessel.

Referring now to Fig. 2, I have shown an alternate construction of girder web in lattice-form, which can be substituted for the webs 7-7, of the girder shown in Fig. 1. A girder formed of this construction would have certain advantages which will be ap parent to those versed in the art, and the bolts 9-9, which secure the floor-timbers 1-1, together through the girder would be inserted through the lattice work.

It will be understood, of course, that other forms of steel girders can be used in place of the box girder, without departing from the spirit of my invention, and I do not, therefore, limit my invention to the exact form of girder here shown for purposes of illustration, except as I may be limited by the hereto appended claims.

I claim:

1. In ship construction, in combination with the floor ceiling timbers and keel, a steel girder extending lengthwise of the ship above the keel thereof and having its top plate substantially flush with the top surface of the floor, holding bolts extending through the web portion thereof and the floor timbers at the opposite sides, and hold ing bolts connecting said girder and said keel, substantially as described.

2. In ship construction, in combination With the floor ceiling timbers, frame-Work" and keel thereof, an iron girder setbetween the middle floor ceiling timbers above the keel, With transverse holding bolts eXtendingrthrough said girder and floor ceiling timbers, and vertical holding bolts connecting said girder and said keel.v

3. In ship construction, in combination With-the floor ceiling timbers, frame worln and keel. thereof,,.an irongirder set bet-Weeni. the -middle floor timbers and. extending lengthwiseof the vessel With its toprplate' substantially flush with the upper surface. of said floor timbers and its, bottom plate, substantially fiushwith the under surface of said floortimbers,-holdingbolts eXtend-- ing cross-Wisethrough said girderand said floor timbers, and vertical holding bolts C0111? necting said girder and saidkeel, substan-U tially as shown and described.

4.;Insship construction, in combination. With thefloor timbers, floor frames and keel, a keelsoncomprising an iron girder formed of one. or more steel Webs between the floor Gopiesof this-.patenhmay be obtainedforfive centsieach, by addressing, thecommissioner of,Patents ,h.

5511i ship construction, in combination With the floortimbers, floor frames andkeel, a boX girder of steel construction extending lengthwise above the keel between the middle floor timbers, and having its top plate substantially fiush .Wlilll the .fioor surface of said floor timbers, holdingbolts: extending crosswise through said .boX girder and said floor timbers,-and vertical. bolts connecting saidgirder-and saidkeel throughsaid floors, frames throughout the length of the ship,=.-

substantially as described;

Signed-at Portland, Multnomah county..-

Oregon, this 18thday of December,.'l916,. RICHARD" CHILCOTTT In presence of J. G. STRENG, i. In J. f GRIFFIN.

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